Why do you say these things regarding upside? Perhaps because Diaz is new and shiny? Weber is younger and leagues ahead of where Diaz was at the same age. I'd even give Weber the edge over Diaz now offensively and defensively. I'll go ahead and make the bold statement that Weber could be as good as Subban is right now.

But only because Subban tends to take some time to get back on his game during a season.